803090063 XCMG GR2605 motor grader multi-way valve

803090063 XCMG GR2605 motor grader multi-way valve

The 803090063 multi-way valve is the original hydraulic control core of the XCMG GR2605 grader. It undertakes the critical tasks of pressure distribution, flow regulation, and motion reversal within the entire hydraulic system. It directly affects the coordination and operational accuracy of multiple actuators, including blade lifting/swing, ripper movement, articulated steering, and front wheel tilting. Under harsh working conditions such as long-term heavy loads, high-frequency reversals, and erosion from dust and mud in highway construction, mine stripping, airport runway leveling, and large-scale earthwork projects, it can stably withstand high-pressure impacts and frequent operating loads, and is less prone to malfunctions such as increased internal leakage, valve core jamming, and delayed action. This effectively improves the equipment’s operational accuracy and continuous operational reliability, while reducing hydraulic system maintenance costs.

The multi-way valve features a high-strength ductile iron integral casting valve body, boasting strong structural rigidity and outstanding resistance to deformation. Its internal flow channel is biomimetically optimized, reducing pressure loss by 8% compared to conventional valves. The valve core is made of high-quality alloy steel, quenched and precision ground, achieving a surface roughness Ra≤0.2μm. Combined with imported high-pressure polytetrafluoroethylene (PTFE) composite seals, it offers excellent sealing performance, wear resistance, and aging resistance, with a long-term internal leakage rate ≤0.3L/min. The valve assembly integrates pressure compensation valves, overload relief valves, and one-way locks for protection. It automatically adapts to different load conditions, preventing system overpressure damage. It perfectly matches the original vehicle’s hydraulic pump, actuator cylinders, rotary joints, and other components, requiring no additional adjustments after installation and directly replacing faulty original multi-way valves.

List of Compatible Hydraulic Components

Shovel Lifting Cylinder Control Circuit (Compatible Cylinder Model 803089855)
Shovel Swing Cylinder Control Circuit (Compatible Cylinder Model 804000940)
Ripener Cylinder Control Circuit (Compatible with GR2605 Dedicated Ripper Cylinder)
Articulated Steering Cylinder Control Circuit (Compatible with Cylinder Models 803083235/803077608)
Front Wheel Tilt Cylinder Control Circuit (Compatible with Cylinder Model 803090598)
Side Push Cylinder Control Circuit (Compatible with GR2605 Dedicated Side Push Cylinder)
Auxiliary Hydraulic Output Circuit (Supports External Hydraulic Tools)

Core Parameters

Component Model: 803090063
Product Name: Multi-way Valve
Applicable Models: XCMG GR2605 motor grader, XCMG GR2605 Grader
Structure: Modular integrated multi-way directional valve
Rated working pressure: 45MPa
Maximum working pressure: 50MPa
Nominal flow rate: 160L/min
Operating temperature range: -45℃ to 125℃
Number of valves: 6 main control valves + 1 auxiliary valve
Sealing method: PTFE composite seal + fluororubber (FKM) backup seal
Features: Precise control, strong coordination, low pressure loss, wear-resistant and impact-resistant, integrated protection function, original factory precise adaptation
Applicable working conditions: Heavy-duty graded and precision leveling environments such as highways, mines, airports, and earthmoving.

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